title: Neuro-otological findings in psychiatric patients with nystagmus.
abstract: To evaluate whether neuro-otological tests have clinical significance in psychiatric patients with nystagmus who have inner ear and/or brain dysfunction, we performed neuro-otological tests on 56 psychiatric patients with nystagmus (38 men, 18 women) (age range 40-97; mean age ± SD 61.6 ± 10.5 years). Patients were classified according to the underlying diseases: schizophrenia (25 cases), organic psychiatric disorders (14 cases), alcoholism (16 cases) and excited mental retardation (1 case). Caloric test results showed a normal response in 30 (75%) cases, right canal paresis (CP) in 4 (10%), left CP in 4 (10%) and bilateral CP in 2 (5%). Therefore, 10 (25%) cases had CP. The results of the eye tracking tests (ETT) were sorted into five categories: 4 (8.2%) cases smooth (normal), 8 (16.3%) slightly saccadic, 28 (57.1%) saccadic, 8 (16.3%) ataxic, and 1 (2%) no tracking ability. Therefore, 45 (91.8%) cases had abnormal ETT results. Pure tone audiometry showed normal hearing in 24 (47.1%) cases, right hearing loss (HL) in 3 (5.8%), left HL in 3 (5.8%) and bilateral HL in 21 (41.2%). Therefore, 27 (52.9%) cases had HL. The patients were classified as organic or functional groups. In ETT there was a significant difference between these two groups. These results indicate that neuro-otological tests with video-oculography are very important not only for neurological or neuro-otological patients with nystagmus, but also for psychiatric patients with nystagmus.
authors.affiliation: Department of Otorhinolaryngology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan. kiyochan@fc.miyazaki-u.ac.jp
authors.forename: Kensuke
authors.initials: K
authors.lastname: Kiyomizu
authors.forename: Keiji
authors.initials: K
authors.lastname: Matsuda
authors.forename: Koji
authors.initials: K
authors.lastname: Torihara
authors.forename: Meiho
authors.initials: M
authors.lastname: Nakayama
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Ishida
authors.forename: Kensei
authors.initials: K
authors.lastname: Yoshida
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Tono
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001301:Audiometry, Pure-Tone; D004584:Electronystagmography / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006309:Hearing / Q000502:physiology*; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000150:complications / Q000503:physiopathology*; D008875:Middle Aged; D009759:Nystagmus, Pathologic / Q000150:complications* / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology / Q000503:physiopathology; D009760:Nystagmus, Physiologic / Q000502:physiology*; D009801:Oculomotor Muscles / Q000503:physiopathology*; D012189:Retrospective Studies; D014724:Vestibular Function Tests / Q000379:methods*; D014741:Video Recording